GB1238047A - - Google Patents
Info
- Publication number
- GB1238047A GB1238047A GB1238047DA GB1238047A GB 1238047 A GB1238047 A GB 1238047A GB 1238047D A GB1238047D A GB 1238047DA GB 1238047 A GB1238047 A GB 1238047A
- Authority
- GB
- United Kingdom
- Prior art keywords
- furnace
- articles
- oil
- reducing atmosphere
- means capable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Articles (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
1,238,047. Heat treatment furnaces. UGINE KUHLMANN. 31 July, 1968 [1 Aug., 1967], No. 36549/68. Heading F4B. [Also in Division C7] A furnace for heat treating and descaling metals comprises a sealed enclosure, means capable of evacuating the enclosure to a pressure of 0À01-100 torr, means capable of heating the furnace to a temperature of 700-1200‹ C., means for producing a reducing atmosphere therein and means for inserting the metal articles and for cooling and extracting them. In the apparatus shown articles are introduced through a barometric lock 3 of U-shape containing oil 6, appropriate lowering and raising mechanisms being situated in each leg. At 11 articles enter the toroidal shaped furnace 1 through orifice 2 still bearing a coating of oil. A hydrocarbon injector 13 provides the reducing atmosphere and the reduced pressure is maintained through vacuum pipe 14. The one barometric lock also serves to remove treated workpieces that have passed round the toroidal furnace and to quench them as they pass through the oil seal.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR116523 | 1967-08-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1238047A true GB1238047A (en) | 1971-07-07 |
Family
ID=8636225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1238047D Expired GB1238047A (en) | 1967-08-01 | 1968-07-31 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3730501A (en) |
| AT (1) | AT279997B (en) |
| BE (1) | BE717757A (en) |
| DE (1) | DE1758666B1 (en) |
| FR (1) | FR1555588A (en) |
| GB (1) | GB1238047A (en) |
| LU (1) | LU56589A1 (en) |
| NL (1) | NL6810931A (en) |
| SE (1) | SE344340B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2134933A (en) * | 1982-11-18 | 1984-08-22 | Bekaert Sa Nv | Metallic catalysts having a catalytically active surface layer |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3796615A (en) * | 1971-06-23 | 1974-03-12 | Hayes Inc C I | Method of vacuum carburizing |
| US6025536A (en) * | 1997-08-20 | 2000-02-15 | Bristol-Myers Squibb Company | Process of manufacturing a cobalt-chromium orthopaedic implant without covering defects in the surface of the implant |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1634319A (en) * | 1924-10-27 | 1927-07-05 | Erwin C Uihlein | Method and apparatus for heat treating metal articles |
| DE970605C (en) * | 1950-07-21 | 1958-10-09 | Telegraph Constr & Maintenance | Method and device for the continuous annealing of metal strips and wires in the absence of air |
| US3360252A (en) * | 1965-10-13 | 1967-12-26 | Hayes Inc C I | Furnace construction having step-by-step gravitational feed |
-
1967
- 1967-08-01 FR FR116523A patent/FR1555588A/fr not_active Expired
-
1968
- 1968-07-08 BE BE717757D patent/BE717757A/xx unknown
- 1968-07-17 DE DE19681758666 patent/DE1758666B1/en not_active Withdrawn
- 1968-07-24 SE SE10093/68A patent/SE344340B/xx unknown
- 1968-07-25 LU LU56589D patent/LU56589A1/xx unknown
- 1968-07-31 AT AT747368A patent/AT279997B/en not_active IP Right Cessation
- 1968-07-31 GB GB1238047D patent/GB1238047A/en not_active Expired
- 1968-08-01 NL NL6810931A patent/NL6810931A/xx not_active Application Discontinuation
-
1970
- 1970-12-16 US US00098673A patent/US3730501A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2134933A (en) * | 1982-11-18 | 1984-08-22 | Bekaert Sa Nv | Metallic catalysts having a catalytically active surface layer |
Also Published As
| Publication number | Publication date |
|---|---|
| LU56589A1 (en) | 1968-10-31 |
| FR1555588A (en) | 1969-01-31 |
| BE717757A (en) | 1968-12-16 |
| SE344340B (en) | 1972-04-10 |
| DE1758666B1 (en) | 1971-10-07 |
| US3730501A (en) | 1973-05-01 |
| NL6810931A (en) | 1969-02-04 |
| AT279997B (en) | 1970-03-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |